2009-02-24 06:22:58 +00:00
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/errno.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <time.h>
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#include "timer.h"
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int
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timer_expired(struct timer *tp)
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{
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struct timeval now;
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if(gettimeofday(&now, NULL) < 0) {
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perror("gettimeofday");
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return -1;
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}
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return tp->end.tv_sec <= now.tv_sec;
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}
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2009-06-23 00:07:36 +00:00
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int
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timer_expired_micro(struct timer *tp)
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{
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struct timeval now;
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int64_t diff= 0, current= 0;
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if(gettimeofday(&now, NULL) < 0) {
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perror("gettimeofday");
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return -1;
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}
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diff+= tp->end.tv_sec * 1000000 ;
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diff+= tp->end.tv_usec;
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current+= now.tv_sec * 1000000 ;
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current+= now.tv_usec;
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return diff <= current;
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// currently using microsecond limit. Else we need to introduce timespec instread of timeval
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}
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2009-02-24 06:22:58 +00:00
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struct timer *
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new_timer(time_t sec, suseconds_t usec)
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{
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struct timer *tp;
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tp = (struct timer *) malloc(sizeof(struct timer));
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if(gettimeofday(&tp->begin, NULL) < 0) {
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perror("gettimeofday");
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return NULL;
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}
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memcpy(&tp->end, &tp->begin, sizeof(struct timer));
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tp->end.tv_sec = tp->begin.tv_sec + (time_t) sec;
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tp->end.tv_usec = tp->begin.tv_usec + (time_t) usec;
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2009-06-23 00:07:36 +00:00
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if( sec != 0)
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tp->expired = timer_expired;
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else
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tp->expired = timer_expired_micro;
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2009-02-24 06:22:58 +00:00
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return tp;
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}
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void
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free_timer(struct timer *tp)
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{
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free(tp);
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}
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int
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delay(int64_t ns)
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{
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struct timespec req, rem;
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req.tv_sec = 0;
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while(ns >= 1000000000L)
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{
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ns -= 1000000000L;
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req.tv_sec += 1;
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}
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req.tv_nsec = ns;
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while(nanosleep(&req, &rem) == -1 )
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if (EINTR == errno)
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memcpy(&req, &rem, sizeof rem);
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else
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return -1;
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return 0;
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}
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